DDH has been ISO certified since 1998.

In 2003 we achieved certification to the new 9001:2000 standard by TUV. Current certification is valid through March 2010.

DDH holds the following Underwriters Laboratory (UL) recognitions:

Recognition Description File No.
ZPFW2 Wiring Harness E122042(S)
ZPFW8 Wiring Harness certified for Canada E122042(S)
ZKLU2 Processor Wire E122067(S)

We also manufacture power and distribution units and power distribution panels under our client's approved TUV and UL procedures.